Air treating apparatus



.1940. R. c. JEPERTINGER 2,220,604

A-IR TREATING APPARATUS Filed Oct. 16, 1957 4 Sheets-Sheet l Raham C.L/bpprzmqpzi I 2,220,604 1940 R. c. JEPERTINGER v Novo's I IAAAAAAAAAAAAAAAAAAA US Inn" 1940- R. c. JEPERTINGER 2,220,60

AIR TREATING APPARATUS Filed Oct.- 16, 1937 4 sheets sheet 3 1940- R. c.JEPERTINGER 2 ,220,604

AIR TREATING APPARATUS Filed Oct. 16, 1937 4 Sheets-SheetA Patented Nov.5, l940 UNITED STATES;

1 PATENT- OFFICE 1 Claim. (01. 126-104) This invention relates toimprovements in air treating apparatus and refers particularly to adirect fired hot air type of unit particularly suitable for, domesticinstallation.

It is an object of this invention to provide an efilcient hot air.furnace in combination with air treating or conditioning means. Anotherobject of this invention is to provide 'a compact air treating unitcomplete in itself to the inclusion of a hot'air furnace and hich is sodesigned as to obtain greater efiic'ency by more complete heat transferand the assurance of proper combustion under all circumstances.

Another object of this invention is to provide a new and novelconstruction for combustion chambers for use with oil burners wherebysperfect combustion can be assured regardless of the requirements of anyparticular installation.-

Moi'e specifically it is an object of this inven tion to providesimplemeans whereby the volume or size'of the combustion chamber may beadjusted'to suit the requirements of any particular burner orinstallation.

Still another object of this invention is to provide a compact airtreating apparatus capableofmoving a large volume of air at relativelyslow velocity and to insure the maintenance of uni-.

' form temperatures-for such air as predetermined by suitable controlinstrumentalities. .With-the above and other objects in view which willappear as the description proceeds, this invention resides in the novelconstruction, combination and arrangementof parts substantially ashereinafter described,- and more'particularly defined by the appended.claim, it being understood that such changes in the precise) embodimentof the hereindisclosed invention may be made as come within the scope ofthe claim.

The accompanying drawings illustrate one complete'example of thephysical embodiment of the invention constructed. according to thebestmode so far devised for the practical application of the principlesthereof, and in which;

Figure l is a perspective view of the complete air treating apparatusshowing the exterior oil burner is mounted,"

Figure 2 is a perspective viewof the apparatus with one, side wall ofthe casing removed and thereof and illustrating the manner in which the550 parts broken away and in section-:-

Figure 3 is a perspective View showing the back of the unit with theback wall removed; and

Figure 4 is a view partly in side elevation and partly in verticalsection'through the apparatus.

- 5 Referring. now particularly to the accompany;

- with which ducts l5 and I6 connect, and extend- 6 to the back wallcylinder adjacent to the front wall is open and ing drawings in whichlike numerals designate like parts throughout the several views,- thenumeral 5 designates-generally the casing of the apparatus whichconsists of a vertical front wall 6, a back wall I, side walls 8 and 9,a bottom l0, and'a top ll. These walls are secured to a fabricated framel2 which includes uprights at the corners of the casing andtransver'sesupports l3 and i4. i The top wall II has inlet and outlet openings ingdown from the top well ll between its inlet and outlet openings'is avertical partition wall H. v This 'wall terminates a substantialdistance from' the bottom 10 and has one edge of a slanting transversepartition wall [8 secured. thereto; the opposite edge of which extendsto the side wall 9.

' The partition walls I! and l8 extend from the front wall to-the backwall and thus divide the interior of the casing into twoseparated com-.partments, .one communicated with the inlet openi and the other with theoutlet opening.

' The only' communication between these compartments is through a blowerindicated generally by. the numeral l9 and mounted in the space 25beneath the partition walls I! and Ill.

The blower discharges through an opening 20 in=the partition wall 7 l8into the outlet compartment, and the inlet of theblower, provided by itsopen sides, is in open communication with the 30 inlet compartment aswill be readily. apparent The blower is suitably, mounted fromthetransverse sup'ports l4 and is driven by an electric motor 2|.

All air entering the inlet compartment through 35 the inlet ductflS isfiltered before it reaches the blower,- by means of a filter 22extending across theinlet compartment, preferably at a slant to providegreater area. Access may be had to the *filter'22-through a door' 23 inthe side wall 8 40 which is closed by a removable panel 24.

Positioned within he outlet compartment is a heating device indicatedgenerally by the numeral 25. This heating device comprises a cylinder ortube 26 disposed horizontally within" the casing 5 andextendingsubstantially from the front wall Theend of this tube or' is inlinewi-th an opening 21 in the front wall.

The opening2l is bounded by a flange 28 which provides fOrthe attachmentof an'oil burner 29 (indicated'in construction lines in Figures 1 and 4)so that the burner discharges directly into the cylinder. A- refractorylining 30 in the cyl-.

inde protectsthe same from the direct flame.

Medially .of its ends the cylinder has a transverse bafile 3| adjustablymounted therein. This baflie is formed of a suitable refractory materialand is so shaped that its lower portion fits the curvature of the innerlining wall, while its upper edge is spaced from the lining of thecylinder to divide the interior of the cylinder or tube into tworestrictedly communicated chambers, one of which constitutes acombustion chamber.

The baflie is not secured to the cylinder or tube, but is sufficientlyheavy to remain in any adjusted position, and being adjustable, it isobvious that the volume or size of the combustion chamber for which itforms the back wall, may be adjusted to meet the requirements of anyparticular burner or installation. v

The closed end of the cylinder or tube 26 con nects with an upstandingflat flue 32. This flue preferably has increasing cross sectionaldimensions to permit expansion of the heated gases, and its upper endwhich terminates just below the top wall of the casing, is connectedthrough a plurality of ducts 33 with a flue bonnet 34 mounted on theoutside of the front wall above the oil burner.

The bonnet 34 has the usual flange 35 to provide for the attachment of astack pipe and is equipped with a damper 36 to control the flow ofheated gases from the ducts 33. The ducts 33 are formed of metal havinga high coefficient of heat transfer and have a multiplicity of fins 31mounted thereon to increase their ability to transfer heat to the airpassing over them.

The bank of ducts extends across the entire outlet. compartment notoccupied by the flue 32. Consequently, all air moving upwardly throughthe outlet compartment comes in intimate contact with a highly heatedsurface. The efliciency of the device is therefore very high.

The heating device generally indicated by the numeral 25, and whichas.described constitutes the cylinder 26, the flue 32, and the ducts 33,is

suspended in any suitable manner from the band 39 holding up the openfront end of the cylinder 26 are shown.

If desired, the walls of the casing may be provided with a heatinsulated lining 40 as shown 2 on the back wall I.

In operation suitable control instrumentalities govern the functioningof the oil burner and the blower motor. These instrumentalities startthe burner and the blower motor in the customary manner when required,and when in operation the burner projects its flame directly into thecombustion chamber heating the tube or cylinder 26 to an intense heatand causing highly heated gases to flow upwardly through the flue 32 andforwardly through the finned ducts 33 into the flue bonnet 34 at avelocity controlled by the damper 36.

The operation of the blower; as will be readily apparent, draws the airdown through the fllter 22 and discharges the same up through the out-.let compartment past the highly heated combustion chamber, the flue 32,and the ducts 33.

While not illustrated, it is obvious that humidification can be providedby introducing a spray into the heated air above the ducts 33 or at anyother suitable point.

From the foregoing description taken in connection with the accompanyingdrawings, it will be readily apparent to those skilled in the art thatthis invention provides an exceptionally compact air treating apparatus,and that it provides an improved and highly efficient hot air furnacecompactly-combined with air treating means.

What I claim as my invention is:

A furnace comprising: a substantially cylindrical tube providing acombustion chamber and having an open front end to admit a heatingflame; a flue connected with the rear end of the tube and extendingupwardly therefrom, said flue having substantially parallel front andback walls with the tube joined to the front wall whereby the back wallof the flue closes the rear end of the tube, saidparallel walls beingsubstantially normal to the axis of the tube and said flue having sidewalls tangential to the tube and diverging outwardly; a plurality ofducts connected with the front wall of the upper portion of said flueand extending forwardly above the tube with their forward endsterminating substantially in line with the front end of the tube; acabinet having vertical walls enclosing the tube, flue and duets withthe open front end of the tube and the forward ends of the ductsadjacent to the front wall of the cabinet; and a flue bonnet connectedwith the open forward ends of the ducts and projecting forwardlytherefrom to protrude from the front wall of the cabinet and receivesupport therefrom, said flue bonnet having an outlet opening forconnecting the bonnet with a stack.

RICHARD C. JEPER'IINGER.

